000 00334nam a2200121Ia 4500
008 190711s9999 xx 000 0 und d
082 _a622.23 S128
100 _aSAFETY ENGINEERING AND RESEARCH CENTER DERVER COLORADO
245 0 _aDRILLERS SAFETY MANUAL
260 _aJODHPUR
_bSCIENTIFIC
_c1986
300 _a19X13
942 _cBK
_2DDC
999 _c20075
_d20075